| abstract |
Production of bluish cast gloss pigments by treating titanium dioxide-coated silicate flakes with a reducing gas mixture by using titanium dioxide-coated silicate flakes, the titanium dioxide coating of which has a geometric layer thickness of 10 to 60 nm, at 800 to 900 ° C with a gas mixture which contains a vaporized organic compound with ammonia treats as well as bluish gloss pigments based on silicate flakes, which have a reduced titanium dioxide coating with a geometric layer thickness of 10 to 60 nm and CIELAB color values -2 ≦ a * ≦ 2 and b * ≦ -20 (measuring angle 20 °, standard illuminant D65). |